home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!elroy.jpl.nasa.gov!ames!sgi!nimrod.wpd.sgi.com!roberts
- From: roberts@nimrod.wpd.sgi.com (roberts)
- Subject: Re: Summary: Problem with /bin/mail...
- Message-ID: <nkdpn0c@sgi.sgi.com>
- Sender: roberts@nimrod.wpd.sgi.com
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Date: Wed, 22 Jul 1992 18:24:45 GMT
- Lines: 86
-
- Tony.Martindale@comp.vuw.ac.nz writes:
-
- > I have several gripes with this "fix". Firstly, it bounces mail.
-
- First, bouncing mail that would otherwise be misdelivered is the right
- thing to do. Using your criterion, /bin/mail should never have checked
- for passwd entries in the first place, since doing so causes it to "bounce
- mail."
-
- > Secondly it is a band-aid type solution/fix, the problem indicated
- > could be better dealt with by adjustments/fixes in other parts of the
- > overall picture (YP/NIS map reliability for example).
-
- Second, I am sure SGI and much of the workstation industry would gladly
- welcome your solutions to the problems of NIS map reliability. I suggest
- you forward your adjusted/fixed sources to Sun Microsystems so they
- may eventually be made available to the wider community. I trust your
- solutions also correct for operator error.
-
- > Thirdly this is
- > a specific problem to large (my assumption) YP/NIS dependent sites,
- > using the DNS MX records (MB records and/or OSI directory services in
- > the future) is a far better solution to the "problem".
-
- Third, I do not think it is a very good idea to continue to misdeliver
- mail for the next 3 or 4 decades while we wait for OSI to figure out how
- to save us from ourselves.
-
- > Not to mention
- > the fact that this change was not noted in the Release Notes (or at
- > least the ones we have) and why wasn't backward-compatibility there
- > from the beginning not instead of in retrospect?
-
- You are correct. The change did not make it into the release notes.
- It should have been noted there. That's one of the reasons I posted a
- long explanation here.
-
- Restoring wrong behaviour is bad engineering. Relying on wrong behaviour
- is bad engineering. I added the backward-compatibility mode "in retrospect"
- because I was not aware up-front that there were any customers interested
- in bad engineering. I was wrong.
-
- > But, this still does not explain the problems we were having.
-
- Then what are you on about?
-
- > Mail
- > was bouncing in the way I described (see original message below) for
- > users with valid home directories! I have sent mail to Robert
- > informing him of this, with no response to date.
-
- Please note that I am a development engineer not a customer support engineer.
- I am neither required nor expected to respond to questions posted to this
- group, and I have only a very limited time I can spend doing so. I have
- even less time available to try and diagnose customer problems via e-mail.
- If you need faster problem resolution, I suggest you call your local SGI
- field office.
-
- > Again, if anyone can shed any more light on this it would be
- > appreciated. I would also like to see SGI take responsibility for
- > what has been done to /bin/mail and release a
- > fixed/backward-compatible version.
-
- I will gladly take responsibility for having made message delivery via
- /bin/mail more reliable. Note that reliable does not mean "doesn't bounce."
- As stated by Eric Allman in the design goals section of the document
- "SENDMAIL - An Internet Mail Router":
-
- Message delivery should be reliable, in the sense of guaranteeing
- that every message is correctly delivered or at least brought to the
- attention of a human for correct disposal; no message should ever be
- completely lost.
-
- A misdelivered message is as bad as lost. It is better to bounce than
- to lose. It may cause headaches for administrators, but it will result
- in more reliable mail.
-
- A broken/backward-compatible version will be available in a future release
- for use by those who don't mind the possibility of misdelivered mail.
-
- - Robert Stephens
-
- ---
- The above comments are entirely my own. They do not necessarily represent
- the views or opinions of Silicon Graphics Inc.
-
-